Composite wrapping material



Jul 7,1936. T, M YA 2,046,848

7 COMEOSITE WRAPPING MATERIAL Fi'led May 19, 1934 Patented July 7, 1936 UNITED STATES PATENT OFFICE 7 2,046,848 oomosrrr. WRAPPING MATERIAL My invention relates ration of Delaware Pa., assignor, by

Inc., a corpo- Application May 19, 1934, Serial No. 726,557

'1 Claims. (01. 229-8'l) to wrappers for articles of merchandise and more particularly to a type of composite wrapper'which-includes a transparent area. A composite wrapper oi the type to which 5 my present invention is related is disclosed in my prior application for Serial No. 550,252.

The composite wrapper of comprises sections of paper or more 01 1855 opaque patent, filed July 11, 1931,

this application similar material, in character, flanking the edges of and secured to a transparent section which is preferably a form of cellulose hydrate.

While other sheet material of a transparent character may be employed, it is preferred that the transparent section be made of-cellulose hydrate of a moisture-proof type; that is to say, a cellulosic product of a highly transparent nature, fa-

miliarly known as cellophane,

which has been treated with a surfacing material'rendering the same substantially airand moisture-proof.

Composite wrapping material is in more or less general use and is employed for the wrapping of various commodities as, for example, bread;

the wrapper usually displaying someform of advertising matter or of the contained goods. been employed to prepare the like, or an indication Various methods have these composite wrappers as, for example, by associating sections of paper or similar material which are maintained in more or less registering position when run through a machine of suitable character whereby such paper sections may be associated with and permanently connected to an intermediate section of highly transparent material, preferably a form of moisture-proof cellulose hydrate.

When these composite wrappers to be employed as enclosures one practice has been are intended for food products, to provide sections of paper which are waxed. In order that such sections or waxed paper may be in condition to receive and be properly adherent to an intermediate section of transparent material-cellulose hydrate of moisture-proof type or be-it has been the the the like, as the case may practice to omit the wax coating on each surface adjacent one edge of each waxed paper sheet in order that a margin or selvage of plain tate connection untreated paper is left to facilitherewith of the moisture-proof or other section of cellulose hydrate, inasmuch as some difliculty has been encountered in attempting to secure the of cellulose hydrate waxed surface.

The object of my the difficulties hereto transparent material, whether or other character, to the invention is to avoid all of fore present in the preparation of composite wrapping material of this general nature which has been and is employed to a very great extent in the packaging of various ed ible commodities, bread wrapping being a notable instance of its use; and to provide a composite 5 wrapper including completely waxed paper sections secured to and flanking a transparent .section, cellulose hydrate of a moisture-proof type, or the like, which will maintain the article enclosed thereby in air-tight condition.

And aiurther feature of my invention is to provide an improved wrapper of a composite character with waxed paper portions imprinted over the entire surface, including the intermediate transparent portion. l5

These and other features of my invention are more fully described hereinafter, reference being had to the accompanying drawing, more or less diagrammatic in character, in which:

Figure l is a perspective view of a section of composite wrapping material of the character to which my invention has been applied.

Fig. 2 is a similar view showing such composite wrapping material imprinted with suitable indicia to indicate the character of theproduct en- 25 closed thereby.

Fig. 3 is a similar view of the finished wrapper showing the waxed condition of the paper sections.

Fig. 4 is an enlarged sectional view of my .im'- proved composite wrapper taken on the line IV- IV, Fig. 3, and e Fig. 5 is a fragmentary perspective view on a much larger scale illustrating a detail of my invention.

In the manufacture of these composite wrapthe packaging of various articles of food-bread, for instance-the side sections of paper flanking the section of highly transparent material-cellulose hydrate or the like-have been waxed, and these waxed sections have had printed matter displayed thereon. These paper sections may be printed prior to assembly with the highly transparent intermediate section, and as they sometimes contain matter designed for registry, considerable difficulty has resided in the attempts to form satisfactory wrappers from such material. While it may be possible to efiect substantially a desired registry of two independent printed paper sections of a composite wrapper, in all l'kelihood it would be necessary to employ special means coordinating or cooperating with the printed sections to insure this desired registry, with the attendant additional expense. All of this is avoided by the arrangement 55 such paper sections.

which I have proposed, in which the printing operation is applied to the completed composite wrapping material, such printing extending over the entire surface of the composite wrapper; that is to say, over the side sections as well as over the highly transparent intermediate section, after all of such sections have been associated and permanently secured together.

In the method heretofore employed in the making of composite wrapping material having marginal sections of partially waxed paper, there has always existed an unsealed portion between the intermediate section of cellulose hydrate .or other transparent material and the waxed portions of the paper sections, because it has been necessary to leave unwaxed a marginal portion of such paper sections to which the cellulose hydrate or other transparent material is connected, and this has militated against its use to a certain extent.

In the drawing, the composite wrapper is shown as composed of sections of paper which may be of any-suitable character, indicated at A, and a section of transparent material which may be cellulose hydrate of a moisture-proof type or the like, indicated at B. The inner marginal edges a of the respective paper sections overlap the outer marginal edges b of the intermediate sec-' tion of cellulose lwdrate or other transparent material to which edges they are secured by lines of adhesive in the usual manner.

In Fig. 2, the section of composite wrapping material is illustrated as having been overprinted with suitable indicia which may represent the contents or goods enclosed thereby, the name of the dealer, etc., such imprinted indicia being indicated at :c.

In Fig. 3, I have shown a section of the finished wrapping material in which the marginal sections of paper are illustrated as coated with a waxy body C, common in the manufacture of waxed papers and the like. This waxy body extends over the entire bodyof the paper sections to the marginal edges thereof which flank the section of transparent material or cellulose hydrate which constitutes a window between the inner marginal edges of the paper sections. On the underside of the wrapping material-that is to say, the portion which shows the marginal edges 1) of the cellulose hydrate or other transparent material as overlying the marginal edges of the paperthe'wa'x coating C is brought over such marginal overlapping edges of the cellulose hydrate or other transparent material so that both surfaces of the entire material of the composite wrapper which flank the actual transparent area are fully coated.

In carrying out my present invention, the paper sections and the section of cellulose hydrate or other transparent material intermediate the same are secured together in any suitable manner. The three sections may be run between suitable rolls, as indicated in my prior application above-referred to, or a plurality of doublewidth paper sections and a plurality of the intermediate highly transparent sections, cellulose hydrate of a moisture-proof type or the like, may be connected in any manner, more or less common in-the art and then the double-width sections of paper may be separated by suitable slitting means ai'ter permanent connection of the transparent sections with the marginal edges of condition of the composite wrapper are plain, unwaxed elements.

The paper sections in this The next step is to imprint the composite wrapper with desired indicia, as indicated in Fig. 2. This imprinting may be all over the wrapping material, as indicated in Fig. 2, or only the paper sections may be imprinted.

The next step is to subject the composite web to suitable wax-applying means which will serve to completely wax coat the paper sections up to and including both marginal edges of the same directly adjacent the transparent sections, which 10 may be cellulose hydrate or other suitable material having similar characteristics, which overlie the paper sections. The wax coating is applied on both surfaces of the composite wrapping material, as may be understood, and the wax is coating on that side of the composite wrapper where the edges of the cellulose hydrate section overlie the marginal edges of the laterally disposed paper sections extends to such marginal edges of the cellulose hydrate, as clearly indicated 20 in Fig. 5. This insures a wrapper which is moisture-proof throughout the entire width and effects complete sealing between the waxed side sections of paper or the like and the intermediate highly transparent section, and provides an airtight wrapper for application to any commodity, the waxed portions thereof, as well as the section of cellulose hydrate, being susceptible of heating for complete scaling in the final wrapping of the package.

In the manufacture of my improved composite wrapping material, the printing step may follow directly the connection of the separate webs of paper and transparent material, cellulose hydrate or the like, and as soon as the printed surface is dry, the wax coating may be applied. This wax coating may be applied in any suitable mannet that will insure complete coating of the surfaces of the paper sections, together with the overlying marginal edges of the central section of 40 transparent materialcellulose hydrate or the like-but without touching that portion of the latter which actually forms the window between the marginal paper sections.

A distinct advantage of my improved method of making the composite wrapping material resides in the fact that, after the several sections or sheets have been connected, it may be printed from side to side with the assurance that the .printing on one of the marginal paper sections, for

instance, will be in absolute registry with and exactly match the printing applied to the other marginal section of paper, with or without printed matter upon the transparent section intermediate said paper sections.

Ihave referred herein to the use of cellulose hydrate as the transparent section of my improved compnsite wrapper, and such term is intended to indicate the material familiarly known as cellophane, whether plain, moisture-proof, or that type known in the trade as M. S. T." I do not wish to be limited to the use of cellophaneplain, moisture-proof, M. S. T..type, or otherwise-as the transparent portion of my improved composite wrapping material, however, and I may employ the so-called "crystalline or glassine" of commerce; gelatin; celluloid; pyralin, or any other transparent material sufliciently flexible to be employed in the formation of packages or as the wrapping of various forms of packages, boxes, or other container, and the like, when associated with the waxed paper sections making up the composite wrapping material which I have developed.

while my improved composite wrapping mate- 76 rial is available for use as unit wrappers or wrappings for various commodities, or various forms of packages, boxes, and the like, it will be understood that it may be employed in all forms of wrapping machines employed for covering various commodities, or boxes, cartons, or the like, containing the same, or packaging machines in which mechanism for forming a container operates in advance of a filling operation, label-pasting operation, etc., without departing from my invention.

It will also be understood that my improved composite wrapping material-moisture-proof throughout its entire extent-may be employed in the manufacture of various types of enclosures which might include a tubing step in their formation. In tubing such material, the seam of the tube may be joined by heat and/or pressuremeans other than pasting-or if pasting is desired the surfaces of the overlapping portions may be scratched or abraded sufiiciently to remove so much of the wax coating as to permit the use of an adhesive connection, and such scratching or abrading may be carried out in the manner set forth in my pending application filed December 19, 1930, Serial No. 503,594.

It. will be understood that modifications may be made in the method of producing my improved composite wrapping material and in the material employed in its manufacture without departing from my invention, all of which is within the scope of the appended claims.

I claim:

1. The herein described method of makin composite wrapping material which consists in joining one marginal edge of a plurality of sections of paper to the marginal edges of a section of transparent material disposed intermediate said paper sections; said transparent section defining a window between the paper sections, and wax coating both surfaces 'of said sections of paper up to the margins of the window defined'by said intermediate transparent section.

2. The herein described method .of making composite wrapping material with imprinted indicia which consists in joining one marginal edge of a plurality of sections of paper to the marginal edges'of a section of transparent material disposed intermediate said paper sections; ,said transparent section defining a window between the paper sections, imprinting'the surface of the several sections making up such composite wrapping material, and wax coating both surfaces of said imprinted sections of paper up to the margins of the window defined by said intermediate transparent section; said wax coating covering the marginal edges of the transparent section overlapping the marginal edges of the paper sections.

3. As a new article of manufacture, a composite wrapper comprising marginal sections of paper and a central section of transparent material permanently secured to a marginal edge of each of said paper sections; said section of transparent material defininga window between the paper sections, and a coating of wax covering both surfaces of said paper sections and extending up to the margins of the Window defined by said section of transparent material. I

4. As a new article of manufacture, a composite wrapper comprising marginal sections of paper and a central section of transparent material having its edges overlying and permanently secured to a marginal edge of each of said paper sections; said section of transparent material defining a window between the paper sections, and a coating of wax covering both surfaces of said paper sections and extending up to the margins of the window defined by said section of transparent-material; said wax coating covering the overlapping edges of the central section of transparent material.

5. Composite wrapping material comprising a section of paper and a section of coated cellophane defining a transparent area; the meeting edges of the paper section and the cellophane overlapping and being' permanently secured together, and a coating ,of wax extending continuously over at least one surface of the paper and over the surface of the lapping portion of the cellophane substantially to the transparent area and sealing the joint between such overlapping portions.

6. Composite wrapping material comprising oppositely disposed sections of paper and a section of coated cellophane disposed between the same and defining a transparent area; the meeting edges of the paper sections and the cellophane" overlapping and being permanently secured together, with a coated surface of the cellophane between the overlapping or meeting edges of the paper, and a coating of wax covering the paper sections and extending along a portion of the coated cellophane substantially to the transparent area.

7. Composite wrapping material comprising oppositely disposed sections of paper and a section of coated cellophane disposed between the same and defining a transparent area; the-meeting edges of the paper sections and the cellophane overlapping'and being permanently secured together, with'a coated surface of the cellophane between the overlapping or meeting edges of the paper, and a coating of wax covering the paper sections and extending into the region of the union of the adjacent outer edges of the cellophane and the overlapping portion of the paper sections substantially to the transparent area.

'THOMAS M. ROYAL. 

